The effects are described of the influence of the particle size of a sulfonic cation exchanger in nickel form introduced into the epoxy binder on the sensory characteristics of the resulting moisture-sensitive system. The introduced filler was crushed on a planetary mill by changing the speed of the glass (300, 400, and 500 rpm). It is shown that differences in the conditions of mechanical processing of the filler cause changes in the permeability of the resulting systems, while the moisture-sensitive characteristics of the obtained films also depend on the fractional composition. The obtained values of the flow parameters (percolation) are consistent with the theoretical values for spherically overlapping particles, while the critical fraction of the conducting phase is smaller for systems with larger particles due to the early formation of transport paths. These data indicate that varying the particle size of the active filler in the sensor system creates the possibility of a directed change in its performance. The size factor can be used to create self-adjusting protective coatings with improved weather resistance and a high protective resource.

Приведены результаты влияния размера частиц сульфокатионита в никелевой форме, введенного в эпоксидное связующее, на сенсорные характеристики получаемой влагочувствительной системы. Вводимый наполнитель измельчали на планетарной мельнице при изменении частоты вращения стакана (300, 400 и 500 об./мин). Показано, что различия в условиях механообработки наполнителя обуславливают изменения в проницаемости полученных систем, а влагочувствительные характеристики полученных пленок также зависят от фракционного состава. Полученные значения параметров протекания (перколяции) согласуются с теоретическими для сферически перекрывающихся частиц, при этом для систем с более крупными частицами критическая доля проводящей фазы меньше, вследствие раннего формирования путей переноса. Приведенные данные указывают на то, что варьирование размера частиц активного наполнителя в сенсорной системе создает возможность направленного изменения его эксплуатационных характеристик. Размерный фактор может быть использован при создании саморегулируемых защитных покрытий с улучшенной погодозащищенностью и высоким защитным ресурсом.

The influence of AV-17-8, a strong basic anion-exchange resin introduced in various ionic forms as an active filler on the adhesive resistance of bitumen–anionite protective systems during their cathodic polarization has been studied. The following ionic forms of the anionite were selected for study: the initial chloride form and the nitrate, hydroxo, sulfate, chromate, carbonate, silicate, phosphate, and hydroxoaluminate forms. A significant effect of the ionic form of the introduced anion exchange resin on the cathodic disbondment and, as a result, the adhesive durability of bitumen–anion exchange protective anticorrosion coatings is shown. The effect of disbandment inhibition was found, explained by the nature of the interaction of the mobile anion of the microreservoir (AV-17-8 particles) with iron (2+) cations formed in the anode zone on a steel surface in the “disbandment cell.” This effect can be used to create protective anticorrosion coatings with increased durability and protective capacity.

The effect that diatomite in various ion-modified forms, introduced as active filler, exerts on the adhesion durability of bitumen–inorganic protective systems at their cathodic polarization was studied. The cathodic disbondment and, as a consequence, the adhesion durability of bitumen–polymer protective coatings depend on the ionic composition of modified diatomite clay. According to the results of the 10-day polarization, introduction of Na+ increases the disbondment by 33% relative to the initial bitumen, whereas metal ions forming insoluble hydroxides are ranked in the following order with respect to the degree of suppression of the “disbondment cell”: Сo2+ ˂ Ca2+, Zn2+ ˂ Mg2+ ˂ Cu2+ ˂ Ni2+. Physicochemical mechanisms responsible for the promotion or inhibition of the disbondment in the systems under consideration are discussed. The results obtained can serve as a basis for the further development of durable protective coatings.

ChemInformVolume 35, Issue 44 Heterocyclic Compounds Synthesis and Antimicrobial Activity of Complexes of Transition Metals with 5-Nitro-2-furohydrazideimide (I). A. B. Fursina, A. B. Fursina Kubanskii gos. univ., Krasnodar 350040, RussiaSearch for more papers by this authorP. A. Pavlov, P. A. Pavlov Kubanskii gos. univ., Krasnodar 350040, RussiaSearch for more papers by this authorF. A. Kolokolov, F. A. Kolokolov Kubanskii gos. univ., Krasnodar 350040, RussiaSearch for more papers by this authorV. I. Terekhov, V. I. Terekhov Kubanskii gos. univ., Krasnodar 350040, RussiaSearch for more papers by this author A. B. Fursina, A. B. Fursina Kubanskii gos. univ., Krasnodar 350040, RussiaSearch for more papers by this authorP. A. Pavlov, P. A. Pavlov Kubanskii gos. univ., Krasnodar 350040, RussiaSearch for more papers by this authorF. A. Kolokolov, F. A. Kolokolov Kubanskii gos. univ., Krasnodar 350040, RussiaSearch for more papers by this authorV. I. Terekhov, V. I. Terekhov Kubanskii gos. univ., Krasnodar 350040, RussiaSearch for more papers by this author First published: 12 October 2004 https://doi.org/10.1002/chin.200444119Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume35, Issue44November 2, 2004 RelatedInformation